GL in finding some at that price. I believe they're the most rare piece of the set and have been holding onto a MU of +/-700-800 for almost 10 years. The reason I know that is because I looted a pair when I first started playing from an Oculus in a team hunt and we sold them for +850 back then.
There are some for sale on the AH and if I was you, I'd just pick them up. It's your decision ofc but as a Boar owner myself (and I owned a Boar set with only (L) arms), I can tell you finding arms alone is not that easy.
Any-who, best of luck in your search and free bump I guess